A system for coinjecting mixtures of diesel fuel and water into a heavy-duty diesel engine has been developed and evaluated at the Southwest Research Institute. This system features prototype Lucas electronically controlled injectors, full electronic control, and can vary the percentage of water in the mixture on a cycle-resolved basis. Tests of this system were conducted on a production Volvo D-12 engine, and have produced reduced and smoke emissions over steady-state and transient conditions. Water-diesel coinjection yielded a considerable improvement in -smoke and -BSFC trade-offs under steady-state engine operation. In addition, control of the water percentage on a cycle-resolved basis was shown to be an effective method for mitigating and smoke emissions over step-load transients. Results from this work show that a combination of aggressive EGR and coinjection is very promising for producing very low levels of engine-out exhaust emissions, reducing the water storage requirements, and improving fuel efficiency. Further refinement of this injection technology is in progress.
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Cycle-Controlled Water Injection for Steady-State and Transient Emissions Reduction From a Heavy-Duty Diesel Engine
Rudolf H. Stanglmaier,
Rudolf H. Stanglmaier
Markisches Werk GmbH
, Haus Heide 21, 58553, Halver, Germany
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Philip J. Dingle,
Philip J. Dingle
Delphi Diesel Systems
, 5725 Delphi Drive, Troy, MI 48098
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Daniel W. Stewart
Daniel W. Stewart
Southwest Research Institute
, 6220 Culebra Rd., San Antonio, TX 78228
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Rudolf H. Stanglmaier
Markisches Werk GmbH
, Haus Heide 21, 58553, Halver, Germany
Philip J. Dingle
Delphi Diesel Systems
, 5725 Delphi Drive, Troy, MI 48098
Daniel W. Stewart
Southwest Research Institute
, 6220 Culebra Rd., San Antonio, TX 78228J. Eng. Gas Turbines Power. May 2008, 130(3): 032801 (7 pages)
Published Online: March 26, 2008
Article history
Received:
June 2, 2005
Revised:
September 25, 2007
Published:
March 26, 2008
Citation
Stanglmaier, R. H., Dingle, P. J., and Stewart, D. W. (March 26, 2008). "Cycle-Controlled Water Injection for Steady-State and Transient Emissions Reduction From a Heavy-Duty Diesel Engine." ASME. J. Eng. Gas Turbines Power. May 2008; 130(3): 032801. https://doi.org/10.1115/1.2830856
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